Lenovo ThinkPad Yoga Digitizer Pen (4X80F22110) Comfortable and realistic writing experience with a friction tip 1024 level of pressure sensitivity; Eraser Functionality Compatible with ThinkPad Yoga 12 (Lenovo Machine Types 20DK & 20DL) and ThinkPad Yoga (Lenovo Machine Types 20C0 & 20CD) ThinkPad Yoga Digitizer Pen This pen works ONLY with Touch-screen Digitizer display; does NOT work on finger touch screen.